Pendulum
O.Sarapu-W.Unzicker
Oldenburg 1949
46... d2+? (Black missed 46... Rb7 47. h4 Kd4 ) 47. Kxd2 Rxf3 48. gxf3+
Kxf3 49. h4 Kg4 50. h5 Kxh5 51. Kc3 f5 52. Kxc4 1/2-1/2
Draw because of the Pendulum
If 52... Kg4 53. Kd3 Kg3 (53... Kf3 54. b4 Kg2 55. Ke3= Pendulum) 54. Ke2
and here is the Pendulum
Kg2 55. Ke3 Kg3 56. Ke2=